Section 06 Products of the chemical or allied industries 29 Organic chemicals 29 17 Polycarboxylic acids, their anhydrides...; their ... derivatives 29 17 13 Azelaic acid, sebacic acid, their salts and esters 29 17 13 00 Azelaic acid, sebacic acid, their salts and esters Commodity Code Description 29 17 13 00 000 Azelaic acid, sebacic acid, their salts and esters